Latch-loc construction



y 9, 1969 M. J. RYMLAND I 3,457,572

LATCH-LOG CONSTRUCTION Filed Aug. 4* 1967 2 Sheets-Sheet 1 INVENTOR JX/PZAY JFYMdfi/Vfl ATTORNEYS July 29, 1969 M. .1. RYMLAND 3,457,72

LATCHLOC CONSTRUCTION Filed Aug. 4, 1967 2 Sheets-Sheet 2 Afd 6/ A71? W W 4 2 ATTORNEYS United States Patent 3,457,572 LATCH-LDC CONSTRUCTION Murray J. Rymland, 2700 Hollins Ferry Road, Baltimore, Md. 21230 Filed Aug. 4, 1967, Ser. No. 658,431 Int. Cl. B68g 9/00 US. Cl. 260 11 Claims ABSTRACT OF THE DISCLOSURE A spring cushion assembly provided with parallel rows of overlapping coil springs and parallel files of spacedapart coil springs. Wide radius sinous tie wires are secured to the overlapping portions of the coil springs and extend between adjacent COils of a file. In one embodiment, the midsections of the sinuous portions of a tie wire are secured to the same side of the alternate coil springs in the same file and to the opposite sides of adjacent coil springs in the same file. In another embodiment, alternate sinuous portions of the tie wires extend into the space between adjacent coil springs in a file while the other sinuous portions are secured to the same side of adjacent coil springs in the same file.

Brief description of the invention This invention relates to a spring cushion assembly and, in particular, to an improved spring cushion assembly having a wide radius sinuous tie Wire which can incorporate the stabilizing end structure of my Patent No. 2,857,603 issued Oct. 28, 1958 or my Patent No. 2,993,215 issued July 25, 1961.

The spring cushion assembly of the present invention comprises parallel rows of overlapping coil springs, parallel files of spaced-apart coil springs and wide radius sinuous tie wires, which are secured to overlapping portions of the coil springs and which extend between adjacent coils of a file. Pairs of the sinuous tie wires are connected in a like manner to the upper and lower overlapping portions of the coils in each file. In one embodiment of the invention, the midsections of sinuous portions of a tie Wire are secured to the same side of alternate coil springs in the same file and to opposite sides of adjacent coil springs in the same file. In this embodiment, pairs of depressions are provided at each midsection which cooperate with a clip to secure the tie wire to the oil springs. In the other embodiment, alternate sinuous portions of a tie wire extend into the spaces between adjacent coil springs of a file while the other sinuous portions are secured to the same side of adjacent coil springs in the file. In this embodiment pairs of depressions are provided at alternate midsections for securing the tie wire to the coil springs.

One object of the present invention is to provide a spring cushion assembly having a highly flexible and supple surface and having more lineal inches of tie wire between the coil intersections so as to provide additional support for upholstered material.

Another object of the present invention is to provide an assembly wherein the action upon the tie wires during coil deflection is a torsional action rather than a flexing action, thus greatly increasing the life of the mattress unit.

A further object of the invention is to provide an assembly wherein the tie wire formations have a wide radius rather than acute formations, thus adding life to the unit.

Another object is to provide an assembly wherein the interdependence of the coil springs in the distribution of the workload is improved because of the arrangement of the improved tie wires.

Another object is to provide an assembly where the 3,457,572 Patented July 29., 1969 individual action of the coil files is improved whereby greater body conformity and weight leveling equalization takes place within the assembly.

A still further object is to provide an assembly wherein the sinuous tie wire can incorporate a hinge stabilizing structure at each end which gives the unit an additional overall lateral flexibility.

Other objects and advantages of the present invention will become more apparent from the following disclosure when taken in combination with the accompanying drawings in which:

FIGURE 1 is a plan view of a portion of a spring cushion assembly illustrating a first embodiment of the invention;

FIGURE 2 is a perspective view of the sinuous tie wire utilized in the first embodiment of th invention;

FIGURE 3 is a section taken along line 3-3 of FIG- URE 1;

FIGURE 4 is a plan view of a portion of a spring cushion assembly illustrating a second embodiment of the present invention; and

FIGURE 5 is a perspective view of the sinuous tie Wire utilized in the second embodiment of the invention.

Detailed description of the invention Referring to FIGURE 1 of the drawings, the first embodiment of this invention comprises parallel rows 10 and files 12 of conventional helical coil springs 14. Each row of springs is aligned and arranged with arcuate portions of the upper and lower end convolutions of each spring overlapping the corresponding portions of an adjacent spring in the same row, whereby one such portion becomes an overlying arcuate portion 16 and the other an underlying arcuate portion 18.

To fix adjacent rows in the desired parallel-spaced relationship and to ensure that the corresponding springs of adjacent rows are properly arranged in files 12, a plurality of sinuous tie wires 20 extend between and interconnect the adjacent coil springs of each file. As shown in FIGURE 1, the sinuous tie wires 20 extend between opposite sides of adjacent coil springs in the same file with the tie wire, therefore, being secured to the same side of alternate coil springs in the same file. Each tie wire extends symmetrically from each inner row of the assembly with the sinuous portions 22 of the tie Wires being defined between points of inflection 21. The points of inflection 21 are located at the midpoints of adjacent file spaces along the center lines 23 of the files with the midsections 24 of the sinuous portions intermediate the points of-inflection being secured to the coil springs. Due to the wide radius of the sinuous portions 22 of the wire and the location of the points of inflection 21, each Wire extends in a concave manner, with respect to the center line 23 of the file, between the midpoints of adjacent spaces of the file. Also, due to the'wide radius of the sinuous portions 22 of the wire, a significant amount of the tie wire lies within the spaces between the adjacent coil springs of a file to provide additional support for the upholstery material.

As shown in FIGURE 2, there are pairs of continuous sinuous tie wires 20 with each tie wire 20 including deltashaped edge supports 26. Each upper tie wire 28 interconnects the upper overlapping portions of the coils in a file while each lower tie wire 30 interconnects the lower overlapping portions of the coils in a file in a like manner; While in the preferred form of the invention, the upper tie wires 28 and the lower tie wires 30 are not interconnected, it is contemplated that the upper and lower tie wires can be one continuous piece of wire with stabilizing ends such as those disclosed in my Patents No. 2,857,603 issued Oct. 28, 1958, and No. 2,993,215 issued July 25, 1961.

, FIGURE 3, which is a cross sectional view taken along lines 3-3 of FIGURE 1, illustrates the manner in which the tie wires 20 are secured to the overlapping portions 16, 18 of the coil springs. Each tie wire 20 at the mid sections 24 of the sinuous portions 22 is provided with a plurality of pairs of spaced depressions 38, each pair of depressions "being separated by an upwardly projecting insert 40 as best illustrated in FIGURE 2. When positioned in the assembly, each pair of depressions 33 partially embraces the intersecting sections of an overlapping pair of arcuate portions 16, 18 and the intermediate insert 40 projects into a space 42 between the arcuate portions. As will be readily understood, the radius of the sinuous portions 22 is such that the pairs of depressions 38 are spaced along the length of the tie wires 20 to suitably space the adjacent coil springs of the file and, consequently, the parallel rows.

A clip member 44 interconnects the overlapping end convolutions of the springs 14. The clip members are made up of two transversely-spaced portions 46 and 48, which engage the upper and lower overlapping portions 16 and 18, respectively and a depressed portion 50, intermediate portions 46 and 48, which passes beneath and engages the undersurface of the tie wire insert portion 40. The positioning of the upper and lower overlapping portions 16, 18 of the coil springs and clip members 44 allows little or no pivotal movement of the tie wire. Thus, since tie Wire 20 comprises wide radius sinuous portions 22 and since the tie wire is connected to the springs in such a manner that substantially no pivotal movement is permitted at the connections, deflection of the wide radius sinuous portions of the tie wire results in a torsional, rather than a flexing action, which greatly increases the life of the spring cushion assembly.

FIGURES 4 and 5 illustrate a second embodiment of the present invention comprising parallel rows 110 and parallel files 112 of conventional helical coil springs 114. As shown in the first embodiment, each row of springs is aligned and arranged with arcuate portions of the upper and lower end convolutions of each spring overlapping the corresponding portions of adjacent springs in the same row whereby one such portion becomes an overlying arcuate portion 116 and the other an underlying arcuate portion 118.

To fix the rows in the desired parallel-spaced relationship and to ensure that the corresponding springs of adjacent rows are properly aligned in files 112, a plurality of sinuous tie wires 120 extend between and interconnect the adjacent coil springs of each file. The tie wires 120 extend symmetrically from each inner row only into the spaces intermediate adjacent coils of the file. As shown in FIGURE 4, each tie wire 120 comprises sinuous portions 122 defined between inflection points 121 of the tie wire. Alternate midsections 124 of the sinuous portions 122 are secured to the same side of adjacent coil springs in a file, while the midsections 124 of the other sinuous portions are located at the midpoints of adjacent file spaces along the center line 123 of the file. Due to the wide radius of the sinuous portions 121 of the wire, a great length of tie wire lies within the spaces between the adjacent coil springs of a file to provide additional support for the upholstery material.

As shown in FIGURE 5, there are pairs of continuous sinuous tie wires 120 with each tie wire including deltashaped edge supports 126. Each upper tie wire 128 interconnects the upper overlapping portions of the coils in a file while each lower tie wire 130 interconnects the lower overlapping portions of the coils in a file in a like manner. While in the preferred form of the invention, the upper tie wires 128 and the lower tie wires 130 are not interconnected, it is contemplated that the upper and lower tie wires can be one continuous piece of wire with stabilizing ends such as those disclosed in my Patents No. 2,857,- 603 issued Oct. 28, 1958 and No. 2,993,215 issued July 25, 1961.

'Each tie Wire 120 is provided with a plurality of pairs of spaced depressions 138 each pair of depressions being separated by an upwardly projecting insert 140 therebetween as best illustrated in FIGURE 5. When positioned in the assembly, each pair of depressions 138 partially embraces the intersecting sections of an overlapping pair of a-rcuate portions 1'16 and 11S and the intermediate insert 140 projects into a space 142 between the arcuate portions. Since the tie wire 120 is connected to the same side of adjacent coil springs in a file, the pairs of depressions are located at the midsections 124 of alternate sinuous portions. Of course, the radius of the sinuous portions 122 is such that the pairs of depressions 138 are spaced along the length of the tie wires 120 to suitably space the adjacent coil springs of the file and, consequently, the parallel rows.

As in the first embodiment, a clip member 144 interconnects the overlapping end convolutions of the springs 114 in the same manner as clip 44 interconnects the overlapping portions 16 and 18 in the first embodiment. The clips 144, in combination with the overlying and underlying arcuate sections of the coil springs, allow little or no pivotal movement of the tie wire 120. As in the first embodiment, this factor, in cominbation with the wide radius sinuous portions 122 of the tie wire, provides a spring cushion assembly wherein, during deflection, the tie wires are subjected to a torsional, rather than a flexing, action thereby greatly increasing the life of the spring cushion assembly.

What is claimed is:

1. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between and secured to adjacent coil springs in the same file at the overlapping end portions of the coil springs, sinuous portions of each tie wire extending symmetrically from each inner row of the assembly only into the spaces between the adjacent coil springs of the file to which the tie wire is secured with each of said tie wires providing support for upholstery material between adjacent coil springs of the file, each sinuous portion of each tie wire having a Wide radius with the tie wires being subjected to torsional action during coil deflection.

2. The spring cushion assembly of claim 1 wherein the tie wires are connected to the coil springs so as to permit substantially no pivotal movement of the tie wires at the connections.

3. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between adjacent coil springs in the same file, each tie wire comprising sinuous portions defined between points of inflection of the tie wire, said sinuous portions each having midsections intermediate said points of inflection, said midsections of each tie wire being secured to overlapping end portions of the coil springs, said sinuous portions of each tie wire extending symmetrically from each inner row of the assembly into the spaces between the adjacent coil springs of the file to which the tie wire is secured with each of said tie Wires providing support for upholstery material between adjacent coil springs of the file, each sinuous portion of each tie Wire having a wide radius whereby the tie wires are subjected to torsional action during coil deflection.

4. The spring cushion assembly of claim 3 wherein the tie wires are connected to the coil springs so as to permit substantially no pivotal movement of the tie wires at the connections.

5. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil Springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between and secured to adjacent coil springs in the same file at the overlapping end portions of the coil springs, sinuous portions of each tie wire extending symmetrically from each inner row of the assembly only into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius with the tie wires being subjected to torsional action during coil deflection, and alternate sinuous portions of each tie wire being secured to the same side of adjacent coil springs in the same file.

6. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between and secured to adjacent coil springs in the same file at the overlapping end portions of the coil springs, sinuous portions of each tie wire extending symmetrically from each inner row of the assembly only into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius with the tie wires being subjected to torsional action during coil deflection, and sinuous portions of each tie wire being secured to the same side of alternate coil springs in the same file.

7. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical. coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between and secured to adjacent coil springs in the same file at the overlapping end portions of the coil springs, sinuous portions of each tie wire extending symmetrically from each inner row of the assembly only into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius with the tie wires being subjected to torsional action during coil deflection, and sinuous portions of each tie wire being secured to opposite sides of' adjacent oil springs in the same file.

8. A spring cushion assembly comprising a plurality of parallel rods and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between and secured to adjacent coil springs in the same file at the overlapping end portions of the coil springs, sinuous portions of each tie wire extending symmetrically from each inner row of the assembly only into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius with the tie wires being subjected to torsional action during coil deflection, and sinuous portions of each tie wire extending between midpoints of adjacent spaces of a file in a concave manner with respect to the center line of the file.

9. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between adjacent coil springs in the same file, each tie wire comprising sinuous portions defined between points of inflection of the tie wire, said sinuous portions each having midsections intermediate said points of inflection, said midsections of each tie wire being secured to' overlapping end portions of the coil springs, said sinuous portions of each tie Wire extending symmetrically from each inner row of the assembly into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius whereby the tie wires are subjected to torsional action during coil deflection, and alternate midsections of each tie wire being secured to the same side of alternate coil springs in the same file.

10. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between adjacent coil springs in the same file, each tie wire comprising sinuous portions defined between points of inflection of the tie wire, said sinuous portions each having midsections intermediate said points of inflection, said midsections of each tie wire being secured to overlapping end portions of the coil springs, said sinuous portions of each tie wire extending symmetrically from each inner row of the assembly into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius whereby the tie wires are subjected to torsional action during coil deflection, and adjacent midsections of each tie wire being secured to opposite sides of adjacent coil springs in the same file.

11. A spring cushion assembly comprising a plurality of parallel rows and parallel files of similar helical coil springs, the coil springs each having end portions overlapping the end portions of at least one other coil spring in the same row, the coil springs being arranged in spaced relation to adjacent coil springs in the same file, each file having a continuous sinuous tie wire extending between adjacent coil springs in the same file, each tie wire comprising sinuous portions defined between points of inflection of the tie wire, said sinuous portions each having midsections intermediate said points of inflection, at least some of said midsections of each tie wire being secured to overlapping end portions of the coil springs, said sinuous portions of each tie wire extending symmetrically from each inner row of the assembly into the spaces between the adjacent coil springs of the file to which the tie wire is secured, each sinuous portion of each tie wire having a wide radius whereby the tie wires are subjected to torsional action during coil deflection, and alternate midsections being secured to the same side of adjacent coil springs in the same file.

References Cited UNITED STATES PATENTS 2,120,093 6/1938 Foster 5260 2,240,051 4/1941 OMalley 5260 2,243,210 5/ 1941 Kerstein 5-260 2,291,390 7/1942 Krakauer 5-260 X 2,630,586 3/1953 Rymland 5270 2,791,783 5/1957 Rymland 5-275 CASMIR A. NUNBERG, Primary Examiner US. Cl. X.R. 5-270, 351 

